Just an
FYI,the over the conter pass car Castrol 20-50 GTX sold today has greatly reduced zddp(only 800-850ppm) and you should not be running it in an air cooled v-twin with a flat tappet cam.
Long tern over many miles that GTX will shorten the life of your R*'s motor so keep that in mind.
For only a $1 more a qt you can get valvolines 20-50 bike oil specifically mfg'sd for big v-twins with wet clutches that also has the proper zddp lvl (1400ppm) for safe flat tappet cam protection and to also aid in additional overall engine protection too.
I was a huge Castrol gtx 20-50 fan for my 4 stroke bikes and 396-427 bbc's motors for over 25-30yrs BUT when the zddp was reduced in that oil i stopped running it in my bikes & street perf bbc motors.
Since then i have been running valvolines 20-50 bike oil in the bikes & spectro's new hi perf oil for flat tappet cam'd muscle car motors with 1800ppm zddp in it in my BBC street perf motors.
Summit sells that same spectro oil re-pkg'd under their name ,it's avail in conventional ($5.96 qt) & semi blend ($5.95 qt) in st 30wt/10-40/20-50 grades.
Spectro also seels a hi quality conventional 20-50 oil for 4 stroke/v-twin biles that's pcied a little higher at $7-$7.95 qt which is good oil too along with their either semi blend or was it full syn oil spectro offers too if you want to step up a notch in oil quality.
Check out spectro's oil site for details but be aware that their new oil for flaqt tappet cam'd motors is called MOTOR GUARD and thier motorcycle oil is called just that, MOTORCYCLE OIL so keep that in mind so you dont confuse them if you check them out or buy them.
You can buy the spectro oils online from spectro/other bike shops & dealers that are online,and or at your locar bike shop.
Scott
Favoured: 0
These are Roadstars not Ferraris.
